In class of 40 pupils the number of girls is three-fifths of the number of boys. Find the
number of boys in the class.
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The electron is a subatomic particle, symbol e⁻ or β⁻ , whose electric charge is negative one elementary charge. Electrons belong to the first generation of the lepton particle family, and are generally thought to be elementary particles because they have no known components or substructure.
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No. of boys are 25
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